[Dune] dune-grid-howto examples programs on parallel computers

Markus Blatt Markus.Blatt at iwr.uni-heidelberg.de
Wed Sep 1 18:01:48 CEST 2010


On Wed, Sep 01, 2010 at 09:12:36PM +0530, Ankur Jayesh wrote:
> Dear Sir,
> I'm trying to use DUNE library v2.0 for my work. I am working on a cluster
> computer with MPICH2.
> The tests are not showing any speed-up due to the cluster. What could be the
> problem?
> The programs I've run are:
> gettingstarted
> finitevolume

Sorry for the misleading MPI initializers in these sample programs.
Both of these programs are not parallel. If you run them on a cluster
every process computes the same sequential program.
For parallel programs you have to proceed to chapter 9.



Markus Blatt, Interdisciplinary Center for Scientific Computing,
University Heidelberg, Im Neuenheimer Feld 368, D-69120 Heidelberg

'Mathematics knows no races or geographic boundaries; for
mathematics, the cultural world is one country' - David Hilbert

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